Browsing Research Articles (Plant Pathology) by Title
Now showing items 1-20 of 49
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A cost-effective protocol for molecular detection of fungal pathogens in soil
(Academy of Science for South Africa, 2005)DNA EXTRACTION FROM FUNGI IN SOIL often fails because of humic substances that are co-extracted with the DNA and subsequently inhibit PCR analyses. Moreover, it is difficult to release the fungal DNA because of the diverse ... -
Agricultural practices and their potential role in mycotoxin contamination of maize and groundnut subsistence farming
(Academy of Science of South Africa, 2019-09-26)Mycotoxigenic fungi are common pathogens of maize and groundnuts; they produce mycotoxins which reduce the yield and quality of these grain crops. Numerous agricultural practices including crop rotation and storage methods ... -
Application of fungicides against postharvest botrytis bunch rot of table grapes in the Western Cape
(South African Society for Enology and Viticulture, 1994)Fungicide programmes for the control of postharvest Botrytis bunch rot on table grapes were evaluated in six trials from 1984/85 to 1991/92 in the Western Cape. The study demonstrated the ineffectiveness of dicarboximide ... -
Assessing genotype-by-environment interactions in aspergillus ear rot and pre-harvest aflatoxin accumulation in maize inbred lines
(MDPI, 2017)Aspergillus flavus, causal agent of the Aspergillus ear rot (AER) of maize, also produces aflatoxins that cause aflatoxicosis in humans and livestock. Ten maize inbred lines were evaluated in replicated trials in two ... -
Characterisation of South African isolates of Fusarium oxysporum f.sp. cubense from Cavendish bananas
(Academy of Science of South Africa (ASSAf), 2010-04)Fusarium wilt, caused by the soil-borne fungus Fusarium oxysporum f.sp. cubense (Foc), is a serious vascular disease of bananas in most subtropical and tropical regions of the world. Twenty-four vegetative compatibility ... -
Citrus black spot is absent in the Western Cape, Northern Cape and Free State Provinces
(Academy of Science of South Africa, 2012)The South African citrus industry is strongly focused on exports and South Africa is a signatory member of both the World Trade Organisation Agreement on the application of Sanitary and Phytosanitary Measures and the ... -
Cleistothecia and flag shoots : sources of primary inoculum for grape powdery mildew in the Western Cape Province, South Africa
(South African Society for Enology and Viticulture, 2000)Little is known about the mode of survival and sources of primary inoculum of Uncinula necator, the causal pathogen of grapevine powdery mildew, in vineyards in the Western Cape province. A study was therefore undertaken ... -
Colonization of table grape bunches by alternaria alternata and rot of cold-stored grapes
(South African Society for Enology and Viticulture, 1994)Assessment of latent Alternaria alternata infections in table grapes indicated that infections occurred in commercial vineyards during the entire period of bunch development. Mature bunches were asymptomatic despite high ... -
Contamination of bananas with beauvericin and fusaric acid produced by Fusarium oxysporum f. sp. cubense
(Public Library of Science, 2013)Background Fusarium wilt, caused by the fungal pathogen Fusarium oxysporum f. sp. cubense (Foc), is one of the most destructive diseases of banana. Toxins produced by Foc have been proposed to play an important role ... -
Detection and quantification of black foot and crown and root rot pathogens in grapevine nursery soils in the Western Cape of South Africa
(Firenze University Press, 2018)Black foot disease (BFD) and crown and root rot (CRR) are important soilborne diseases that affect young grapevines in nurseries and vineyards. A 3-year survey (2013–2015) of five open-field grapevine nurseries was conducted ... -
Development of a hydrolysis probe-based real-time assay for the detection of tropical strains of Fusarium oxysporum f. sp. cubense race 4
(Public Library of Science, 2017-02-08)Fusarium oxysporum f. sp. cubense (Foc) is one of the most important threats to global banana production. Strategies to control the pathogen are lacking, with plant resistance offering the only long-term solution, if sources ... -
Diaporthaceae associated with root and crown rot of maize
(International Mycological Association, 2011-03-10)Several isolates of coelomycetous fungi with pigmented conidia were consistently isolated from diseased roots of Zea mays in irrigated plots monitored in the KwaZulu-Natal Province of South Africa. Based on their morphology, ... -
The distribution and host range of the banana fusarium wilt fungus, fusarium oxysporum f. sp. cubense , in Asia
(Public Library of Science, 2017)Fusarium oxysporum formae specialis cubense (Foc) is a soil-borne fungus that causes Fusarium wilt, which is considered to be the most destructive disease of bananas. The fungus is believed to have evolved with its host ... -
The effects of postharvest treatments and sunlight exposure on the reproductive capability and viability of Phyllosticta citricarpa in citrus black spot fruit lesions
(MDPI, 2020-12-21)Citrus black spot (CBS) is caused by Phyllosticta citricarpa, which is classified as a quarantine organism in certain countries whose concerns are that CBS-infected fruit may be a pathway for introduction of the pathogen. ... -
Epidemiology of botrytis cinerea on grape : wound infection by dry, airborne conidia
(South African Society for Enology and Viticulture, 2002)This study describes the infection of fresh wounds on berries exposed to freshly deposited airborne Botrytis cinerea conidia, and on berries carrying previously deposited conidia and germlings (latent infections). Grapes ... -
The essential symbiosis of mycology and plant pathology : present and future needs
(Academy of Science of South Africa, 1995)Correct disease diagnosis is essential for plant pathologists striving to combat plant disease. To support them, mycologists are integrating traditional and molecular techniques. Attention must therefore be given to ... -
First report of Phyllosticta citricarpa and description of two new species, P. paracapitalensis and P. paracitricarpa, from citrus in Europe
(Elsevier, 2017)The genus Phyllosticta occurs worldwide, and contains numerous plant pathogenic, endophytic and saprobic species. Phyllosticta citricarpa is the causal agent of Citrus Black Spot disease (CBS), affecting fruits and leaves ... -
Fitness on grape berries of botrytis cinerea isolates belonging to different dicarboximide sensitivity classes
(South African Society for Enology and Viticulture, 2003)Seasonal fluctuations in the frequency of dicarboximide-resistant Botrytis cinerea isolates in Western Cape vineyards suggest a reduced fitness of these isolates. In this study fitness of sensitive, ultra-low-level and ... -
Frequency of dicarboximide resistant strains of botrytis cinerea in South African table grape vineyards and influence of spray schedules on resistant sub-populations
(South African Society for Enology and Viticulture, 1998)Between 1993 and 1995, 1139 isolates of Botrytis cinerea were collected from table grape vineyards in the Western and Northern Cape provinces and tested for sensitivity to dicarboximides (vinclozolin) and benzimidazoles ... -
Fungicide efficacy against botrytis cinerea at different positions on grape shoots
(South African Society for Enology and Viticulture, 2003)Fungicide efficacy at different positions on grape shoots was determined on vinelets inoculated with Botrytis cinerea. To ensure proper fungicide coverage, vinelets (table grape cultivar Dauphine, wine grape cultivar Merlot ...
